ST. LOUIS (Reuters) - A kindergartener in rural Sweet Springs, Missouri, brought a bag of crystal meth and a crack pipe to school for show-and-tell, but an alert teacher kept the boy from sharing his treasure with others at the school, an official said on Tuesday.

"He was very excited when he got to school," Superintendent Donna Wright said of the September 6 incident. "But I don't think he knew what he had."

A teacher recognized the drugs and pipe and police were called to the elementary school. "It didn't ever get into the classroom," Wright added.

"That was a first for show-and-tell in this town," Police Chief Richard Downing said. He added that the boy's mother, Michelle Cheatham, 32, was arrested later on drug charges and released on bail.

"It was shocking," Wright said. "We're not experienced with dealing with this."

The town, located 66 miles east of Kansas City on the Blackwater River, has 1,500 residents and about 425 students in its school system.